Cocoon and WebSphere

I was trying to install Cocoon 1.8 in WebSphere. Everything started fine. But when I request a xml page, I get the following error: Unable to open resource: E:\WebSphere\cocoon-1.8\conf\cocoon.propertiesjava.lang.NullPointerException at org.apache.cocoon.Cocoon.init(Cocoon.java:123) at com.ibm.servlet.engine.webapp.StrictServletInstance.doInit(ServletManager.java:604) at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._init(StrictLifecycleServlet.java:136) at com.ibm.servlet.engine.webapp.PreInitializedServletState.init(StrictLifecycleServlet.java:244) at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.init(StrictLifecycleServlet.java:102) at com.ibm.servlet.engine.webapp.ServletInstance.init(ServletManager.java:284) at javax.servlet.GenericServlet.init(GenericServlet.java:258) at com.ibm.servlet.engine.webapp.ServletManager.addServlet(ServletManager.java:76) at com.ibm.servlet.engine.webapp.WebAppServletManager.loadServlet(WebAppServletManager.java:91) at com.ibm.servlet.engine.webapp.WebAppServletManager.loadAutoLoadServlets(WebAppServletManager.java(Compiled Code)) at com.ibm.servlet.engine.webapp.WebApp.loadServletManager(WebApp.java:806) at com.ibm.servlet.engine.webapp.WebApp.init(WebApp.java:93) at com.ibm.servlet.engine.srt.WebGroup.loadWebApp(WebGroup.java:121) at com.ibm.servlet.engine.srt.WebGroup.init(WebGroup.java:82) at com.ibm.servlet.engine.ServletHost.addWebGroup(ServletHost.java:117) at com.ibm.servlet.engine.ServletEngineDynamicUpdateSupport.addWebGroup(ServletEngineDynamicUpdateSupport.java:126) at com.ibm.ejs.sm.active.ActiveServletGroup.startAction(ActiveServletGroup.java:76) at com.ibm.ejs.sm.active.ActiveObject.startObject(ActiveObject.java:682) at com.ibm.ejs.sm.active.ActiveObject.start(ActiveObject.java:117) at com.ibm.ejs.sm.active.ActiveObject.operateOnContainedObjects(ActiveObject.java:584) at com.ibm.ejs.sm.active.ActiveServletEngine.startAction(ActiveServletEngine.java:60) at com.ibm.ejs.sm.active.ActiveObject.startObject(ActiveObject.java:682) at com.ibm.ejs.sm.active.ActiveObject.start(ActiveObject.java:117) at com.ibm.ejs.sm.active.ActiveObject.operateOnContainedObjects(ActiveObject.java:584) at com.ibm.ejs.sm.active.ActiveEJBServer.startAction(ActiveEJBServer.java:96) at com.ibm.ejs.sm.active.ActiveObject.startObject(ActiveObject.java:682) at com.ibm.ejs.sm.active.ActiveObject.start(ActiveObject.java:117) at java.lang.reflect.Method.invoke(Native Method) at com.ibm.ejs.sm.agent.AdminAgentImpl.activeObjectInvocation(AdminAgentImpl.java:93) at com.ibm.ejs.sm.agent.AdminAgentImpl.invokeActiveObject(AdminAgentImpl.java:62) at com.ibm.ejs.sm.agent._AdminAgentImpl_Tie._invoke(_AdminAgentImpl_Tie.java:80) at com.ibm.CORBA.iiop.ExtendedServerDelegate.dispatch(ExtendedServerDelegate.java:506) at com.ibm.CORBA.iiop.ORB.process(ORB.java:2282) at com.ibm.CORBA.iiop.WorkerThread.run(WorkerThread.java:195) at com.ibm.ejs.oa.pool.ThreadPool$PooledThread.run(ThreadPool.java:535) I verified that the file path is correct. Any idea why I can't open it. Thanks!